Idea for a new Indiana Jones movie
There will probably never be another Indiana Jones movie, not unless some way to make Harrison Ford and Stephen Spielburg young again is invented. And if something like that is invented to rejuvenate people, that will be very good news regardless of whether any more Indiana Jones movies are made.
But ignoring al lpractical difficulties with making another Indiana Jones movie, what could such a hypothetical movie be about?
If a new Indiana Jones movie was influenced by Indiana Jones and the Temple of Doom, it might be a Cthulhu Mythos movie.
The Cthulhu Mythos is an ever growing and loosely connected series of fantasy, horror, and/or science fiction short stories and novels by H. P. Lovecraft and many imitators written from the 1920s to the present.
The stories are so loosely connected that no two lists of the stories written by H.P. Lovecraft agree on which ones are Cthulhu Mythos stories and which are not. And of course that also goes for various more or less Cthulhu Mythos like stories written by other authors. Various lists disagree on which stories are only vaguely and slightly part of the Mythos, which are not in the Mythos but are inspired by it, and which are firmly part of the Mythos.
Anyway, a lot of the Mythos stories involve strange alien gods from outer space or other universes and dimensions and their cults of worshippers, both human and nonhuman. In many stories it is prophesized that those gods will awake from eons long sleep and take over the world and sometimes the entire universe, destroying the human race in the process. And their human cult members often committ human sacrifice and other crimes in their attempts to hasten the process.
So it seems like the script of Indiana Jones and the Temple of Doom was influenced by Cthulhu Mythos stories and similar stories, so any future Indiana Jones movie that is influenced by Indiana Jones and the Temple of Doom should be like a Cthulhu Mythos story, even more so than Indiana Jones and the Temple of Doom.
Some people claim that Indiana Jones and the Temple of Doom is racist since the evil cultists were residents of India, although Indiana Jones himself was brainwashed and enchanted into joining the cult. Although Lovecraft was a rather racist person himself, his story "The Call of Cthulhu" featured a world wide cult with branches and worshippers in every continent and belonging to every race. And the Cthulhu cultists claimed that they themselves didn't kill their human sacrifices, but nonhuman beings did. So if those nonhuman beings were intelligent beings and people, the Cthulhu Cult would have nonhuman members.
And there are many other sinister cults in the Chulhu Mythos who worship dark gods of evil. So if another Indiana Jones movie is ever made, and if it is influenced by Indiana Jones and the Temple of Doom, it could involve travelling the world to uncover, expose, and defeat an evil cult worshipping Cthulhu or someother dark god of the Cthulhu Mythos.
And if someone wants to make an Indiana Jones like series of movies, It could be about travelling the world to uncover a sinister cult worshipping cthulhu, Azathoth, Nyarlathotep, or some other Mythos god, in the hope of defeating the cult or at least setting backs its plans to destroy the world for a century or two.